What is acetaminophen, caffeine, and isometheptene?
Acetaminophen is a pain reliever and a fever reducer. Isometheptene and caffeine cause constriction (narrowing) of blood vessels (arteries and veins). This is important in the treatment of headaches. The combination, acetaminophen, caffeine, and isometheptene, is used to treat tension (or muscle contraction) and vascular (migraine) headaches. Acetaminophen, caffeine, and isometheptene may also be used for purposes other than those listed in this medication guide.